Halton JRF floor diffusers are designed for under-floor air distribution systems. Air is supplied into the space through the front panel where it mixes efficiently with room air due to the swirl jet air pattern.

The perforated plate inside the casing creates sufficient pressure drop to enable self-balancing system in ductless applications. The recommended pressure level in the plenum chamber is 30 … 40 Pa.

The recommended supply air temperature is max. 3.5 °C lower than the room temperature. The supply airflow rate per unit is 14 … 18 l/s.

Floor supply system design

The Halton JFR floor diffusers are designed for installation within the riser of a step in auditoriums, concert halls, theatres, where a high level of comfort and conveyance is required. Supply air velocity must be very low to reduce discomfort that may be felt in the near zone. We recommend designing as a displacement system with a maximum supply temperature of 3,5 ° C below room. Supply 14 to 18 l/s per unit and allow a distance between outlets of 0.8 to 1 meter. Where comfort requirements are less important, higher airflow rates can be used, generating increased velocities close to the diffuser. Discomfort may be felt if exposed for an extended period of time. In this case outlets should be installed at least 1.5 m from the work place or other continuously occupied areas.

Connection of the diffusers

The Halton JRF is suitable for installations without ductwork connections (fig.1). The space beneath the raised floor is used as a distribution plenum chamber. Construction includes an acoustic plenum with perforated cylinder, which causes an efficient pressure loss and provides a self-balancing system. We recommend designing the system so that the pressure inside the plenum chamber will be 30 … 40 Pa. Where the plenum chamber has a large volume, we recommend the use of multiple air introduction points.

Detach the front panel from the casing by unscrewing the screws.. Clean the parts by wiping them with a damp cloth, instead of immersing in water. Reattach the front panel by screwing it to the casing.

Halton is passionate about indoor environments. We offer business-enhancing products, systems, and services for comfortable, energy-efficient, and safe environments to customers who value people's wellbeing. Halton is involved from target-setting to facility use and focuses on creating positive indoor environment experiences for people.